I just bought a second Sapphire HD 6870 to compliment the one I bought just a couple months ago. GPU-z has been recognizing both cards, so I was expecting to see a performance increase in my games. WRONG!
I have noticed that my games have been performing much better when I disable crossfire. In every game I try (I have tried about 10-15 different games from my steam library), my FPS is about 10-20 less with crossfire, as will as being a lot more stuttery.
I have done a clean sweep with DriverSweeper in safe mode, downloaded the latest CAP for 11.12, and disabled all of my OC'ing. What am I missing?
CPU: AMD FX4100 @ Stock(OC'd to 4.4GHz before I started troubleshooting this problem!)
Mobo: MSI 990XA-GD55
PSU: SILVERSTONE Strider Essential series ST60F-ES 600W (42A on the 12v rail)
OS: W7 64bit
RAM: 16gb Corsair Vengeance
Bottlenecking :S Spend 30 bucks and get a hyper 212 evo and overclock!!!!!!!!!!!!!!
I am aware that buying one of the new bulldozers was a very bad idea, but that doesn't help explain the decrease in performance at all. I would understand my FPS staying the SAME if bottlenecking was the only problem here, but it isn't. It's literally lowering the performance.
yes i have the same problem here 2 6870CF bad Performance and have a fx 8120 and i have a AMD Phenom II X4 OC at 4.1GHz and still get bad Performance its low gpu usage ever one who have 6870CF seem to have the same problem i think its the driver catalyst but some games like BF3 you will get much better Performance.